Got it ... Here's the part I was missing: > You will need 4 files from a recent macOS or iOS build: neuralhash_128x96_seed1.dat NeuralHashv3b-current.

Got it ... Here's the part I was missing: > You will need 4 files from a recent macOS or iOS build: neuralhash_128x96_seed1.dat NeuralHashv3b-current.espresso.net NeuralHashv3b-current.espresso.shape NeuralHashv3b-current.espresso.weights So, for clarity, Apple did not publish the model/code for others to be able to use/test etc. Someone found a clever way to convert the stored model into an open format and therefore others with access to those files are able to experiment.